Probing multiscale transport and inhomogeneity in a lithium-ion cells using in-situ neutron methods
Journal Article
·
· ACS Energy Letters
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); State Univ. of New York, Binghamton, NY (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Saudi Basic Industries Coropration (SABIC), Houston, TX (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Indian Institute of Technology, Hyderabad (India). Dept. of Chemistry
Here, we demonstrate for the first time the lithiation process in graphitic anodes using insitu neutron radiography in a pouch cell format. The neutron absorption contrast shows a direct correlation between degree of lithiation and the discharge voltage plateau. Furthermore, we provide a semi-quantitative comparison between the observed spatial variations of neutron attenuation line profile across the graphite electrode and the calculated lithium concentration profiles computed under similar electrochemical discharge conditions. In conjunction, in situ neutron diffraction of a similar pouch cell under identical test protocol was carried to obtain information about the local phase changes upon lithiation. Combined in-situ radiography and diffraction opens up a powerful nondestructive method to understand the multi-scale nature of lithium transport and degradation in practical lithium-ion cells.
- Research Organization:
- Manufacturing Demonstration Facility (MDF); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Spallation Neutron Source
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1327604
- Journal Information:
- ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 5 Vol. 1; ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:1055190